/Engine/Plugins/Animation/MLDeformer/MLDeformerFramework/Source/MLDeformerFrameworkEditor/Public/MLDeformerGeomCacheEditorModel.h
This is called when training data inputs change. This includes changing things such as the Skeletal Mesh, training anim sequence and target mesh. It will re-initialize the components. For example a skeletal mesh change will update the skeletal mesh component to the new mesh.
virtual void OnInputAssetsChanged()